This is the second AGATA-GRETINA collaboration meeting! The meeting has been devoted to discussions about common challenges related to tracking arrays, including the physics, technical details and analysis of data from these arrays. We intend to organize this collaboration meeting on a yearly or bi-yearly basis, alternating between meeting places in the US and the EU. We hope these collaboration meetings will foster collaborations between the AGATA and GRETINA communities and help define and accomplish our common goals.